If you want the over-engineered version in glibc, then build your Perl with d_strtod=1

Another way to get glibc to assign the value is to use POSIX::strtod.
Unlike my perl-5.22.0, it correctly assigns '-4.848e1': 
C:\>perl -MPOSIX="strtod" -le "print scalar reverse unpack 'h*', pack 
+'d<',strtod('-4.848e1');"
c0483d70a3d70a3d

[download]
In my experience, glibc gets the assignment right for those values that perl gets wrong - though not so much with the non-IEEE "double-double" arrangement, where both are prone to error.
However, I shouldn't assert that perl is any worse at assigning values than glibc. (I don't know how often glibc gets it wrong when perl gets it right.)

Cheers,
Rob

In reply to Re^6: Converting -4.84800000E+001 to -48.48 doesn't work... but 48.49 does (clever) by syphilis
in thread Converting -4.84800000E+001 to -48.48 doesn't work... but 48.49 does by notameadow

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